JP3025125B2 - Punch separation method and punch separation apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching method in which a soft porous sheet with a double-sided adhesive tape to which a release paper is attached is punched into a molded product having a predetermined shape, and the molded product is peeled from the release paper. The present invention relates to a peeling method and a punching / peeling apparatus for performing the punching / peeling method.

[0002]

2. Description of the Related Art A molded product of a soft porous sheet is, for example,
In copiers and laser beam printers, it is used to prevent leakage of toner and block light, and is attached to a work such as a housing via a double-sided adhesive tape.

Conventionally, in a known technique, a portion other than the release paper is punched into a predetermined shape from a strip-shaped multilayer sheet composed of a soft porous sheet, a double-sided adhesive tape, and a release paper. A dedicated punching machine is used to produce a punched sheet.

On the other hand, the work of peeling a molded product from the strip-shaped punched sheet and attaching the molded product to a work is usually performed manually. However, when the molded product is peeled, the molded product is easily damaged or deformed. , Resulting in a decrease in work efficiency. The reason for the above-mentioned difficulties is presumed as follows.

[0005] That is, in the case of a soft porous sheet, a double-sided pressure-sensitive adhesive tape is used because it is necessary to stabilize the dimensions of the sheet. As a result, the thickness of the pressure-sensitive adhesive layer is increased. Therefore, after punching, the cut portion of the pressure-sensitive adhesive layer tends to recombine, and a large force for peeling is required. Also, the adhesive force between the double-sided adhesive tape and the release paper is relatively large, so if you try to peel off by gripping the molded product and applying tensile force, the molded product may be greatly deformed and sometimes damaged. And so on.

Further, as described above, in the conventionally known technique, the punching step and the peeling step are separated, so that it is not easy to cope with in-line production on an assembly line and high-mix low-volume production. There is a point.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide a punching / separating method capable of preventing damage and deformation due to peeling. .

Further, the present invention provides a compact and highly integrated device by integrating a punching process and a peeling process, thereby facilitating in-line and high-mix low-volume production. An object of the present invention is to provide a peeling device.

[0009]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, by blowing compressed air toward the exposed double-sided pressure-sensitive adhesive tape, the peeling is greatly facilitated. They have found what they can do and have completed the present invention.

In order to achieve the above object, the punching and peeling method according to the present invention is characterized in that a multi-layer sheet in which a soft material is bonded to release paper via an adhesive tape is fed to a punching step, and the soft material is adhered to the punching process. The tape portion is cut into a predetermined shape, and then the cut multi-layer sheet is fed to a peeling step,
In the peeling step, a bending member that bends the feeding path at an acute angle is arranged on the feeding path, and the fed multilayer sheet is bent at an acute angle portion of the bending member, so that the multilayer sheet is bent. The cut portion between the cut soft material and the remaining portion thereof is separated so that the adhesive tape is exposed,
After the separation, air is blown toward the exposed adhesive tape to take out the cut soft material from the release paper.

The punching and peeling apparatus according to the present invention comprises a delivery mechanism for delivering a long multilayer sheet and a punch for obtaining a molded product of a predetermined shape from the multilayer sheet delivered by the delivery mechanism. A mechanism, comprising a bending member for bending the multilayer sheet, and a bending transport mechanism for transporting the multilayer sheet, and toward the double-sided adhesive tape exposed in the bending member of the bending transport mechanism. And a peeling mechanism having an air blowing nozzle for blowing compressed air.

Further, the angle of the tip of the bending member is an acute angle.

The angle of the tip of the bending member is 10
Degrees or more and 60 degrees or less.

[0014]

In the punching / peeling apparatus of the present invention configured as described above, the long multilayer sheet is mounted on the delivery mechanism of the apparatus in a rolled state or a folded state.

The multi-layer sheet (soft porous sheet with a double-sided adhesive tape to which release paper is attached) sent from the delivery mechanism is punched by a punching die into layers other than release paper into a predetermined shape by a punching die. . Next, a bent portion is formed on the multilayer sheet by the bending member while tension is applied to the multilayer sheet by the bending transport mechanism.

In the peeling mechanism, compressed air is blown from the air blowing nozzle to the double-sided pressure-sensitive adhesive tape exposed by bending under tension to cut the re-bonded pressure-sensitive adhesive layer, and completely or completely remove the tip of the molded product. Partially peeled off.

After the molded article is obtained manually or by an automatic machine, the remaining multi-layer sheet is pulled while applying a constant tension by a bending and conveying mechanism, and is discharged.

As described above, in the punching / peeling apparatus of the present invention, the use of a long multilayer sheet and the integration of the punching step and the peeling step make it possible to share a transport mechanism in both steps. As a result, miniaturization and high integration of the device are achieved.

[0019]

Next, an embodiment of the present invention will be described with reference to the drawings.

First, the configuration of the punching and separating apparatus of the present invention will be described.

FIG. 1 is a front view of an embodiment of the punching and peeling apparatus of the present invention, FIG. 2 is a view showing details of a punching mechanism, FIG. 3 is a view showing details of a peeling mechanism, and FIG. It is an enlarged view of a tip part. As shown in FIG. 1, a long multi-layer sheet roll 1 is supported by a main body of the apparatus by a reel stand 2, and a clutch mechanism 3 makes the multi-layer sheet roll 1 rotatable or non-rotatable. The pair of pitch feed rollers 4 are feed rollers for the multi-layer sheet 8, and the power of the feed stepping motor 6 is transmitted to one pitch feed roller 4 via the timing belt 7 so that the multi-layer sheet roll is formed. From 1 the multilayer sheet 8 can be fed out as indicated by the arrows. The pitch feed roller presser 5 serving as an air cylinder moves the one pitch feed roller 4 in the vertical direction to pinch the multilayer sheet 8. Roller presser 5 for pitch feed, stepping motor 6 for feed
The timing belt 7 and the like constitute a feeding mechanism of the multilayer sheet 8.

The multilayer sheet 8 sent out from the multilayer sheet roll 1 is composed of a soft porous sheet, a double-sided pressure-sensitive adhesive tape, and release paper (see FIG. 4). The multilayer sheet 8 may be an integrated long sheet, or may be a long sheet formed by joining strip-shaped sheets using a vinyl tape or the like.

Specific examples of the soft porous sheet include urethane rubber, acrylic rubber, chloroprene rubber, ethylene-
Porous rubber sheets which are foamed or sintered bodies such as propylene rubber, silicone rubber, natural rubber, etc .; soft porous sheets which are foamed or sintered bodies such as polyethylene and various thermoplastic elastomers; Cloths such as electroplanted blankets, woven fabrics and non-woven fabrics can be used. Since the size of the multilayer sheet is easily changed by a relatively small tension, usually,
A double-sided pressure-sensitive adhesive tape is used in order to simultaneously satisfy both the purpose of providing tackiness and the purpose of dimensional stabilization without directly applying the pressure-sensitive adhesive to the back surface. The double-sided pressure-sensitive adhesive tape is preferably a tough, low-elongation base material, and a material composed of a pressure-sensitive adhesive applied or impregnated on both sides, but even a double-sided pressure-sensitive adhesive tape consisting of only a pressure-sensitive adhesive has sufficient strength Anything can be used.

As shown in FIG. 1 and FIG.
Is punched into a predetermined shape by a punching mechanism. This punching mechanism is a known one. A punching die (lower die) 10 is provided on a punching receiving base 22, and a punching die (upper die) 9 is integrated with a die base 19. . This mold base 1
9 is the cylinder rod 11 of the punching cylinder 12
And is supported by a mold mounting holder 20 fixed to the base.
By moving the cylinder rod 11 of the punching cylinder 12 in the vertical direction (arrow B direction), the punching die (upper die) 9 can be moved in the vertical direction, and the punching die (upper die) 9 and the punching die ( The multilayer sheet 8 can be punched with the lower mold 10. The guide post 31 is a punching die (upper die) 9
For guiding the vertical movement of the. The stroke adjusting jig 13 can be rotated and adjusted in the direction of arrow A, whereby the stroke of the cylinder rod 11 can be adjusted. Die die (upper die) 9, Die die (lower die) 1
A punching mechanism is constituted by the cylinder rod 11, the punching cylinder 12, the stroke adjusting jig 13, and the like. When the multilayer sheet 8 is punched by this punching mechanism, the stroke of the cylinder rod 11 is adjusted by the stroke adjusting jig 13 so that the double-sided adhesive tape is cut, but the release paper is not cut. Also,
In order to easily change the shape of the molded product, a structure is adopted in which the punching die (upper die) 9 and the punching die (lower die) 10 can be easily attached and detached, as described later.

As shown in FIGS. 1 and 3, the bending conveyance mechanism includes a peeling dog 14 as a bending member, a pair of take-up tension rollers 15, a roller holding cylinder 16, a driving belt 27, and a winding motor. 17 and the like. The take-up motor 17 rotates via a drive belt 27 via one of the take-up tension rollers 1.
5, one of the take-up tension rollers 1
5 can be moved in the horizontal direction by a roller holding cylinder 16. The peeling dog 14 has a sharp V-shaped tip.
The multilayer sheet 8 is bent by the peeling dog 14. At this time, the pair of take-up tension rollers 15 apply a constant tension to the multilayer sheet 8 to take out and discharge the remaining sheet (release paper).
Here, the peeling dog 14 means a jig having a knife-like edge. Angle 29 of peeling dog 14 (see FIG. 3)
Can be arbitrarily selected, but usually, it is desirable that the angle is an acute angle.
If it is 0 degrees or less, it is effective. That is, if the angle is less than 10 degrees, the tip of the peeling dog 14 becomes sharp, which is not desirable because there is a fear of damage to the human body. On the other hand, when the angle is 60 degrees or more, the degree of bending becomes small, and when the thickness of the soft porous sheet is large, the double-sided pressure-sensitive adhesive tape is not sufficiently exposed at the cut portion, and as a result, the peeling function is sufficiently exhibited. This is because they may not be done.

On the other hand, the peeling mechanism comprises a peeling dog 14 and an air blowing nozzle 18. A bent portion is formed in the multilayer sheet 8 by the peeling dog 14, and as a result, both adhesive tapes of the cut portion are exposed to the outside. As shown in FIG. 4, compressed air is blown from the air blowing nozzle 18 toward the exposed double-sided adhesive tape 38, and the whole or the tip of the molded product 28 is peeled off.

FIG. 2 shows details of the punching mechanism. The multilayer sheet 8 (see FIG. 1) located between the punching die (upper die) 9 and the punching die (lower die) 10 includes a punching cylinder 12.
Then, punching is performed by lowering the punching die (upper die) 9 driven by the cylinder rod 11 to form a punched sheet 23 (see FIG. 3). The punching die (upper die) 9 is the die holding member 3
0, the die mounting holder 20, the die base 19, the die fixing screw 21 and the like are attached to the cylinder rod 11 and the die (upper die) 9 and the die are loosened by loosening the die fixing screw 21. The base 19 can be easily replaced by moving it in a horizontal plane. Similarly, the receiving tray 22
The punching die (lower die) 10 fixed above can be easily replaced.

FIG. 3 shows details of the peeling mechanism. The punched sheet 23 is a multilayer sheet formed with a molded product by a punching mechanism. The air blowing nozzle 18 is supported by a traverse 25 for lateral movement, and the traverse 25 for lateral movement moves along the LM guide 26 in the lateral direction (the left and right direction in the side view in the drawing, the width direction of the multilayer sheet) to increase the width. The molded article can be peeled off. When the molded article 28 whose tip is peeled is obtained, the absence of the molded article is detected by the detection sensor 24,
The feed-out mechanism, the punching mechanism, the bending transport mechanism, and the peeling mechanism operate, and the punched sheet 23 is transported by a distance corresponding to one molded product.

Next, the operation of the punching / peeling apparatus of this embodiment, that is, the punching / peeling method will be described. As shown in FIGS. 1 to 3, a long multilayer sheet roll 1 is mounted on a reel stand 2 of a feeding mechanism.

The multilayer sheet 8 delivered from the delivery mechanism is punched into a predetermined shape by a punching die (upper die) 9 and a punching die (lower die) 10. At this time, the stroke of the cylinder rod 11 is set in advance so that the multilayer sheet 8 is cut up to the double-sided adhesive tape, but the release paper 33 (see FIG. 4) is not cut.

The multi-layer sheet 8 is taken off while being bent under a constant tension by a bending conveyance mechanism, and the remaining multi-layer sheet is discharged. Here, the multi-layer sheet 8 is separated by the release dog 14.
A bent portion is formed in the adhesive tape, and as a result, both adhesive tapes of the cut portion are exposed to the outside. Compressed air is uniformly blown in the width direction from the air blowing nozzle 18 toward the exposed portion, and the whole or the tip of the molded product 28 is peeled off. The exfoliated molded product 28 is acquired manually or by an automatic machine at the same position, and is attached to a work (not shown).

More specifically, as shown in FIG. 4, the punched sheet 23 (see FIG. 3) comprises a molded product 28, a remaining multilayer sheet 32, and a cut portion 35 which is a boundary between the two. The cut portion 35 has reached the double-sided adhesive tape 34. The cut portions 36 and 37 are separated from each other at the bent portion formed by the action of the peeling dog 14, and the exposed double-sided adhesive tape 38 appears. Compressed air is blown from the air blowing nozzle 18 toward the exposed double-sided adhesive tape 38 to peel off the tip of the molded product 28. As the multilayer sheet is taken off, the molded article 28 moves by a certain distance from the position shown in FIG. 4 to the right in the drawing, during which the blowing of the compressed air is continued, and the peeling further proceeds.

When the molded article 28 reaches a predetermined position, the taking of the multilayer sheet is interrupted, and after the molded article 28 is obtained, the taking is resumed.

After the molded article 28 is obtained, the release dog 14
The multi-layer sheet that has passed through the front end of the remaining multi-layer sheet 3
9 and only the release paper 33.

[0035]

Since the present invention is configured as described above, the following effects can be obtained.

According to the first to third aspects of the present invention, the molded product can be easily peeled off. As a result, loss due to deformation or breakage is reduced, and work efficiency is improved.

According to the fourth aspect of the present invention, the punching step and the peeling step of a long multilayer sheet can be performed on the same apparatus, and the apparatus can be reduced in size and highly integrated. In-line conversion is easy, and it is easy to respond to high-mix low-volume production.

According to the fifth aspect of the invention, the peeling of the fourth aspect can be ensured.

According to the sixth aspect of the invention, in addition to the effect of the fifth aspect, there is no fear of damage to the human body.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of a punching and separating apparatus according to the present invention.

FIG. 2 is a view showing details of a punching mechanism of FIG. 1;

FIG. 3 is a view showing details of a peeling mechanism shown in FIG. 2;

FIG. 4 is an enlarged view of a tip of a peeling dog.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 multilayer sheet roll 2 reel stand 3 clutch mechanism 4 pitch feed roller 5 pitch feed roller presser 6 feed stepping motor 7 timing belt 8 multilayer sheet 9 punching die (upper die) 10 punching die (lower die) 11 cylinder Rod 12 Punching cylinder 13 Stroke adjusting jig 14 Peeling dog (bending member) 15 Take-up tension roller 16 Roller holding cylinder 17 Winding motor 18 Air blowing nozzle 19 Mold base 20 Mold mounting holder 21 Mold fixing Screw 22 Pull-out pedestal 23 Punched sheet 24 Detection sensor 25 Traverse for lateral movement 26 LM guide 27 Driving belt 28 Molded product 29 Peeling dog angle 30 Mold holding member 31 Guide post 32 Remaining multilayer sheet 33 Release paper 34 Double-sided Adhesive stick Step 35 Cutting section 36 Cutting section 37 Cutting section 38 Double-sided adhesive tape exposed 39 Residual multilayer sheet

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-94372 (JP, A) JP-A-62-173198 (JP, A) JP-A-62-134697 (JP, U) 48592 (JP, B2) (58) Field surveyed (Int. Cl. ⁷ , DB name) B26D 7/18

Claims (6)

(57) [Claims] 1. A multi-layer sheet in which a soft material is bonded to release paper via an adhesive tape is fed to a punching process, and the soft material and the adhesive tape are cut into a predetermined shape. Feeding the cut multilayer sheet to a peeling step, and in the peeling step, disposing a bending member for bending the feed path at an acute angle on the feed path, and bending the fed multilayer sheet to the bent state. By bending at the acute angle portion of the member, the cut portion between the cut soft material and the remaining portion thereof on the multilayer sheet is separated so that the adhesive tape is exposed, and after the separation, A punching / peeling method, wherein air is blown toward the exposed adhesive tape to take out the cut soft material from the release paper. 2. A multi-layer sheet obtained by laminating a soft material to a release paper via an adhesive tape is fed to a punching process, and the soft material and the adhesive tape are cut into a predetermined shape. Feeding the cut multilayer sheet to a peeling step, and in the peeling step, disposing a bending member for bending the feed path at an acute angle on the feed path, and bending the fed multilayer sheet to the bent state. By bending at the acute angle portion of the member, the cut portion between the cut soft material and the remaining portion thereof on the multilayer sheet is separated so that the adhesive tape is exposed, and after the separation, The cut soft material is taken out from the release paper by blowing air toward the exposed adhesive tape, and after the air blowing operation, by the detecting means, the cut soft material is cut from the multilayer sheet. Confirmation of removal Striking 抜剥 away wherein the performing. 3. A multi-layer sheet obtained by laminating a soft material to a release paper via an adhesive tape is fed to a punching process, and the soft material and the adhesive tape are cut into a predetermined shape. Feeding the cut multilayer sheet to a peeling step, and in the peeling step, disposing a bending member for bending the feed path at an acute angle on the feed path, and bending the fed multilayer sheet to the bent state. By bending at the acute angle portion of the member, the cut portion between the cut soft material and the remaining portion thereof on the multilayer sheet is separated so that the adhesive tape is exposed, and after the separation, A blanking / peeling method, wherein air is uniformly blown in the width direction of the multilayer sheet toward the exposed adhesive tape to take out the cut soft material from the release paper. 4. A delivery mechanism for delivering a long multilayer sheet, a punching mechanism for obtaining a molded product of a predetermined shape from the multilayer sheet delivered by the delivery mechanism, and bending the multilayer sheet. And a bending transport mechanism for transporting the multilayer sheet, and an air blowing nozzle for blowing compressed air toward the double-sided adhesive tape exposed on the bending member of the bending transport mechanism. And a peeling mechanism having the following. 5. The punching and separating apparatus according to claim 4, wherein the angle of the tip of the bending member is an acute angle. 6. The punching and separating apparatus according to claim 5, wherein the angle of the tip of the bending member is 10 degrees or more and 60 degrees or less.